Security-Cleared Software Engineer with TS/SCI Poly

Cornerstone Defense; Herndon (VA); On-site; USD 110,000 - 160,000; Full time

Job summary

Cornerstone Defense is seeking a Software Engineer in Herndon, VA to join a high-security government-focused program. The role emphasizes hands-on software development in Java, Python, or .NET, with cloud and security focus.

Ideal candidates have 3+ years of relevant experience, AWS C2S exposure, and strong collaboration in an agile environment. The position requires TS/SCI with polygraph eligibility and offers growth in a mission-driven team.

Qualifications

• Bachelor's or Master's degree in CS preferred; minimum 3 years relevant experience.
• 1+ years AWS C2S experience.
• 2+ years experience in agile activities.
• Experience in infrastructure as code (Ansible, Puppet, Chef).
• Experience with Java, Python or .NET; REST and SOAP APIs.

Responsibilities

• Develop software using Java, Python or .Net.
• Participate in agile activities and code reviews.
• Work with AWS C2S and cloud-based services.
• Mentor teammates and collaborate in an engineering team.
• Design and build APIs and services using REST/SOAP.
• Security reviews of applications and infrastructure.

Skills

AWS

Agile

Java

Python

.NET

REST APIs

SOAP

Docker

Jenkins

Maven

Ansible

Puppet

Chef

GitHub

Eclipse

DevOps

Oracle/MySQL

Education

Bachelor's degree in Computer Science

Master's degree in Computer Science

Tools

Docker

Vagrant

Maven

Jenkins

Job description

Cornerstone Defense is seeking a Software Engineer in Herndon, VA to join a high-security government-focused program. The role emphasizes hands-on software development in Java, Python, or .NET, with cloud and security focus.

Ideal candidates have 3+ years of relevant experience, AWS C2S exposure, and strong collaboration in an agile environment. The position requires TS/SCI with polygraph eligibility and offers growth in a mission-driven team.